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Detection rules › Sigma

WMI Event Subscription

Status
test
Severity
medium
Log source
product windows, category wmi_event
Author
Tom Ueltschi (@c_APT_ure)
Source
github.com/SigmaHQ/sigma

Detects creation of WMI event subscription persistence method

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1546.003 Event Triggered Execution: Windows Management Instrumentation Event Subscription
Privilege EscalationT1546.003 Event Triggered Execution: Windows Management Instrumentation Event Subscription

Event coverage

ProviderEventTitle
SysmonEvent ID 19WmiEvent (WmiEventFilter activity detected)
SysmonEvent ID 20WmiEvent (WmiEventConsumer activity detected)
SysmonEvent ID 21WmiEvent (WmiEventConsumerToFilter activity detected)

Rule body yaml

title: WMI Event Subscription
id: 0f06a3a5-6a09-413f-8743-e6cf35561297
status: test
description: Detects creation of WMI event subscription persistence method
references:
    - https://learn.microsoft.com/en-us/sysinternals/downloads/sysmon#event-id-19-wmievent-wmieventfilter-activity-detected
    - https://learn.microsoft.com/en-us/sysinternals/downloads/sysmon#event-id-20-wmievent-wmieventconsumer-activity-detected
    - https://learn.microsoft.com/en-us/sysinternals/downloads/sysmon#event-id-21-wmievent-wmieventconsumertofilter-activity-detected
author: Tom Ueltschi (@c_APT_ure)
date: 2019-01-12
modified: 2021-11-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1546.003
logsource:
    product: windows
    category: wmi_event
detection:
    selection:
        EventID:
            - 19
            - 20
            - 21
    condition: selection
falsepositives:
    - Exclude legitimate (vetted) use of WMI event subscription in your network
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    EventID:
        - 19
        - 20
        - 21